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<table width="100%" summary="page for presidents"><tr><td>presidents</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Quarterly Approval Ratings of US Presidents</h2>

<h3>Description</h3>

<p>The (approximately) quarterly approval rating for the President of the
United States from the first quarter of 1945 to the last quarter of
1974.
</p>


<h3>Usage</h3>

<pre>presidents</pre>


<h3>Format</h3>

<p>A time series of 120 values.
</p>


<h3>Details</h3>

<p>The data are actually a fudged version of the approval ratings.  See
McNeil's book for details.
</p>


<h3>Source</h3>

<p>The Gallup Organisation.
</p>


<h3>References</h3>

<p>McNeil, D. R. (1977)
<em>Interactive Data Analysis</em>.
New York: Wiley.
</p>


<h3>Examples</h3>

<pre>
require(stats); require(graphics)
plot(presidents, las = 1, ylab = "Approval rating (%)",
     main = "presidents data")
</pre>


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